Setia Ali Mosque in Pekan Muara is about 25.5km from Bandar Seri Begawan. The mosque
was built in the 30th. July, 1960 on the site of a land area of 2,590 acres and
is to be completed in November 1961 at a cost of $ 250,000.00. mosque was officially
opened by His Majesty Sultan Haji Omar Ali Saifuddien Sa'adul Khairi Waddien (the
late Al) on 5th . Muharram, 1382 corresponding to 8hb.Jun, 1962. Capacity mosque
can accommodate 700 worshipers. The facilities available at this mosque is a multi-purpose
hall, meeting rooms and libraries.